US5919796A - Hydroximic acid derivatives, pharmaceutical compositions containing them, and processes for preparing the same - Google Patents

Hydroximic acid derivatives, pharmaceutical compositions containing them, and processes for preparing the same Download PDF

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Publication number
US5919796A
US5919796A US08/737,168 US73716896A US5919796A US 5919796 A US5919796 A US 5919796A US 73716896 A US73716896 A US 73716896A US 5919796 A US5919796 A US 5919796A
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group
formula
compound
acid addition
addition salt
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Expired - Fee Related
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US08/737,168
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Inventor
Mihaly Barabas
Ede Marvanyos
Laszlo Urogdi
Laszlo Vereczkey
Laszlo Jaszlits
Katalin Biro
Andrea Jednakovits
Erzsebet Radvanyi nee Hegedus
Istvanne Udvardy-Nagy
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LadRx Corp
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Biorex Kutato Fejleszto Kft
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Assigned to CYTRX CORPORATION reassignment CYTRX CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIOREX KUTATÓ ÉS FEJLESZTÖ RT. ("V.A."), BRX RESEARCH AND DEVELOPMENT COMPANY LTD
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/08—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
    • C07D295/084—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
    • C07D295/088—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C259/00—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups
    • C07C259/02—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups with replacement of the other oxygen atom of the carboxyl group by halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C259/00—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups
    • C07C259/12—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups with replacement of the other oxygen atom of the carboxyl group by nitrogen atoms, e.g. N-hydroxyamidines
    • C07C259/18—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups with replacement of the other oxygen atom of the carboxyl group by nitrogen atoms, e.g. N-hydroxyamidines having carbon atoms of hydroxamidine groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals

Definitions

  • the invention relates to novel, biologically active hydroximic acid derivatives of the formula ##STR3## wherein X means halogen;
  • Z stands for an aromatic group, pyridinyl group or the like.
  • R represents an alkyl or phenylalkyl group or an --A--N(R 1 )R 2 group, and in the latter
  • R 1 and R 2 stand, independently from each other, for hydrogen an alkyl group; or R 1 and R 2 , together with the adjacent nitrogen atom, form a 5- to 7-membered, saturated heterocyclic group optionally containing an additional nitrogen, oxygen or sulfur atom, the heterocyclic group optionally being substituted by at least one alkyl group; and
  • A stands for a straight or branched chain alkylene group, as well as their pharmaceutically acceptable acid addition salts and pharmaceutical compositions containing these compounds. Furthermore, the invention relates to a process for the preparation of the above compounds and to a method for the treatment of ischemic states or diseases in mammals, including men.
  • X as halogen means fluorine, chlorine, bromine or iodine; compounds containing chlorine as X are preferred.
  • Z as an aromatic group is preferably a phenyl, phenylalkyl, substituted phenyl, substituted phenylalkyl or naphthyl group.
  • the phenyl group of the above substituted groups may be substituted by 1 to 3 identical or different group(s), which is (are) suitably halogen, haloalkyl, alkyl, hydroxy, alkoxy, nitro, amino, mono- or dialkylamino groups.
  • Z stands for a pyridinyl group or the like means a pyridinyl group or its homologues, e.g. picolyl or lutidyl group. Pyridinyl group is particularly preferable; whereas 3-pyridinyl group proved to be most advantageous.
  • alkyl or alkoxy groups as R, R 1 and R 2 or as substituents contain preferably 1 to 8, suitably 1 to 6, most preferably 1 to 4 carbon atoms unless stated otherwise. Methyl, ethyl or n-propyl groups are most preferred.
  • the phenylalkyl group is in most cases a benzyl or phenylethyl group; whereas the mono- and dialkylamino groups are preferably monoC 1-4 alkyl or diC 1-4 alkyl groups, respectively.
  • the haloalkyl group may contain one or more above-mentioned halogen(s) or it may be a perfluoroalkyl group. Preferred are e.g. chloromethyl, 2-chloroethyl or trifluoromethyl groups.
  • the heterocyclic group formed by R 1 , R 2 and the adjacent nitrogen together is preferably a piperidino, piperazino or morpholino group. These groups may optionally be substituted by at least one alkyl group defined above. Thus, these groups may be e.g. a 4-methylpiperazinyl or 2,2-dimethylpiperidinyl group.
  • the alkylene group A may contain a straight or branched chain, and suitably it contains 1 to 8, preferably 1 to 5 carbon atoms.
  • the 1,2-ethylene, 1,3-propylene and 1,4-butylene groups are especially advantageous.
  • Insecticides being structurally similar to compounds of the formula (I) are disclosed in the Japanese patent application published under No. 60.0008253 (Kokai), and ⁇ -blocking agents being structurally similar to the compounds of formula (I) are claimed in the European patent specification No. 0,147,210.
  • compounds disclosed in the latter document differ from the compounds of formula (I) in that a --CH 2 --CH(OH)--CH 2 --(2-hydroxy-propylene) moiety is present between the terminal --NR 1 R 2 group and the remaining part of the molecule instead of the unsubstituted straight or branched alkylene group symbolized by A in the compounds of the formula (I).
  • the compounds described in the European patent specification 0,417,210 are diabetes selective ⁇ -antagonists and can be used especially in the therapy of diabetic angiopathy.
  • the structurally closest analogues of compounds of formula (I) from the prior art are the classical ⁇ -adrenerg receptor antagonists, more specifically the family of the ⁇ -blocker aryloxypropanolamine derivatives. These compounds always possess a secondary hydroxyl group in their alkylene moieties binding the terminal --NR 1 R 2 group to the molecule, and the SAR studies have clearly demonstrated that this substructure is essential for their biological activity see in this respect e.g. Comprehensive Medicinal Chemistry (ed. C. Hansch), Vol. 3. "Membranes and Receptors" (ed. J. C. Emmett), Pergamon Press, 1990, pp. 199,200 and 206!. It has to be noted that the presence of this hydroxyl group introduces chirality to the structure of these compounds.
  • Alkali metal nitrites e. g. sodium or potassium nitrite
  • an alkyl nitrrie e.g. isoamyl nitrite or tert-butyl nitrite
  • a hydrogen halide e.g. hydrochloric acid, hydrogen bromide or the like
  • R is as defined above and Y means a leaving group. This reaction is carried out at room temperature in the presence of an acid binding agent.
  • halogenation of the compounds of formula (V) e.g. thionyl chloride, phosphorus pentahalides, phosphorus oxyhalides, phosgene, carbon tetrachloride/triphenylphosphine, hydrogen fluoride/pyridine, diethylamino-sulfur-trifluoride and the like are useful.
  • the reaction is carried out at an elevated temperature, suitably at the boiling point of the reaction mixture.
  • elemental halogens e.g. chlorine or bromine
  • hypohalogenites e.g. sodium hypohalogenite, tertbutyl hypohalogenite
  • N-chlorosuccinimide, N-bromosuccinime and the like are useful.
  • the reaction is carried out in the presence of an organic solvent, e.g. chloroform or benzene, suitably at room temperature.
  • the compounds of the formula (I) prepared by using any processes a), b), c) or d), respectively, can be converted to pharmaceutically acceptable acid addition salts in a manner known per se.
  • the Reperfusion-induced arrhythmia ventricular tachycardia (VI) and ventricular fibrillation (VF)! was studied on anaesthetized rats.
  • Myocardial ischemia was elicited by compressing the left-sided descending coronary artery for 5 minutes and after the ceasing thereof, by a 10-minute reperfusion of the heart.
  • ECG was continuously monitored, and the change of the mean duration of VT and VF under effect of the test compounds, as well as the survival, were measured in the first 3 minutes of reperfusion.
  • the test compounds were administered in an intravenous (i.v.) dose of 1 mg/kg by 5 minutes before compressing the left-sided descending coronary artery.
  • the survival of experimental animals was found to be 100% by using e.g. the compounds of Examples 2 and 7.
  • vasorelaxant effect of the compounds was investigated in vitro on the thoracal aorta isolated from rabbit Am. J. Physiol. 257, 1327-1333 (1989)!. Our results are summarized in Table 1.
  • the in vivo action was measured on rats, by the change of rate of the impulse conduction in an STZ-induced diabetic state as follows.
  • the rate of motor and sensory impulse conduction (MCR or SCR, respectively) of the sciatic and tibial nerve, respectively, as mixed type nerves was determined by using the method of E. F. Stenley Experimental Neurology 71, 497-506 (1981) as modified by P. De Koning and W. H. Gispen: Peptides 8, 415-412 (1987)!.
  • the electrophysiological measurements were carried out on anaesthetized male Cr:Wistar rats at the end of a one-month period of treatment with 20 mg/kg administered orally (p.o.).
  • the sciatic or tibial nerve, respectively was excited by needle electrodes stitched near the nerve on the lower extremity and the electromyographic (EMG) responses of the plantar muscle were registered. Five EMG-s each were averaged and the results were stored in a computer.
  • the latency periods of the motor and sensory components were measured.
  • the rates of impulse conduction were calculated from the ratio of the distance between two sites of excitation to the differences of latency.
  • the active compounds of the invention can be administered mainly by oral or parenteral route, e.g. in a daily dose of 1-10 mg/kg body weight to an adult human.
  • lactose or starch may be used as filling material.
  • Gelatine, (carboxymethyl)cellulose sodium, methyl cellulose, polyvinylpyrrolidine or starch gum are useful binding or granulating agents.
  • Potato starch or microcrystalline cellulose are mainly added as disintegrating agents though ultraamylopectin, formaldehyde-casein and the like are also suitable.
  • Useful anti-adhesive and sliding materials are talc, colloidal silicic acid, stearin, calcium or magnesium stearate or the like.
  • Tablets can be prepared e.g. by wet granulation and subsequent compression. After mixing the active components and excipients as well as optionally a part of the disintegrating additive, they are granulated together with the aqueous, alcoholic or aqueous-alcoholic solution of the binding agent in suitable equipment, and then the granular substance is dried. Thereafter, the other disintegrating, sliding and antiadhesive auxiliaries are mixed to the dried granulate and the mixture is compressed to tablets. Optionally the tablet is provided with a groove for facilitating the administration. Tablets can directly be prepared also by compression from a mixture of the active ingredient and suitable auxiliaries.
  • the tablets may be converted to dragees by using additives commonly employed for the preparation of medicaments such as stabilizing, savouring agents and dyes, e.g. sugar, cellulose derivatives methyl- or ethylcellulose, (carboxymethyl)cellulose sodium and the like!, polyvinylpyrrolidone, calcium phosphate, calcium carbonate, food dyes, food dye lacquers, aromatizing agents, iron oxide pigments and the like.
  • additives commonly employed for the preparation of medicaments such as stabilizing, savouring agents and dyes, e.g. sugar, cellulose derivatives methyl- or ethylcellulose, (carboxymethyl)cellulose sodium and the like!, polyvinylpyrrolidone, calcium phosphate, calcium carbonate, food dyes, food dye lacquers, aromatizing agents, iron oxide pigments and the like.
  • stabilizing e.g. sugar, cellulose derivatives methyl- or ethylcellulose, (carboxymethyl)cellulose sodium and the like!
  • a mixture containing the active ingredient(s) and auxiliaries is filled into capsules.
  • the composition is formulated to an injectable solution.
  • the active ingredients are dissolved in distilled water and/or various organic solvents, e.g. glycol ethers, optionally in the presence of solubilizing agents such as polyoxyethylene sorbitan monolaurate, monooleate or monostearate (Tween 20, Tween 60 or Tween 80, respectively).
  • the injectable solution may contain various auxiliaries, e.g. preserving agents such as benzyl alcohol, methyl or propyl p-hydroxybenzoate, benzalkonium chloride or phenyl mercury borate and the like; as well as antioxidants, e.g.
  • the injectable solution containing the composition of the invention Before filling the injectable solution containing the composition of the invention into the ampoule, the solution is filtered, and after filling in, it is sterilized.
  • the invention also relates to a method for the treatment of ischemic states or diseases.
  • This method comprises administering a therapeutically effective amount of an active compound of formula (I) or a pharmaceutically acceptable acid addition salt thereof to the patient.
  • the invention relates also to certain novel intermediates of formula (II), from which the following ones are preferred:
  • a solution containing 6.38 g (26.7 mmoles) of N-benzyloxy-3-pyridinecarboxamidine hydrochloride in a mixture of 27.4 ml of concentrated hydrochloric acid and 73 ml of water is cooled to 5° C., and 2.29 g (33.2 mmoles) of sodium nitrite dissolved in 13 ml of water are dropwise added. The mixture is stirred at this temperature an additional 30 minutes. After layering 50 ml of chloroform to the mixture, it is alkalinized to pH 8 to 9 by adding solid sodium carbonate.
  • the aqueous phase is again extracted twice with 50 ml of chloroform each, then the combined chloroformic solution is washed with 10 ml of saturated saline solution, dried over anhydrous sodium sulfate and evaporated.
  • the title hydrochloride is prepared from the base obtained by adding an ethanolic solution of hydrogen chloride, m.p.: 165-167° C.
  • the above starting material can be prepared as follows:
  • the oily residue is dissolved at -5° C. in a mixture of 80 ml of distilled water and 23 ml of 37% hydrochloric acid.
  • 13.79 g (0.2 moles) of sodium nitrite dissolved in 60 ml of water are dropwise added at the same temperature, then the reaction mixture is stirred at -5° C. for additional 2 hours.
  • 150 ml of chloroform and 200 ml of sodium hydroxide solution are added and it is extracted.
  • the organic phase is washed with 50 ml of water, dried over sodium sulfate and evaporated.
  • a solution containing 2.5 g (13.3 mmoles) of N-methoxy-3-pyridinecarboxamidine hydrochloride in mixture of 3.7 ml of concentrated hydrochloric acid and 36 ml of water is cooled to 5° C., then a solution of 1.14 g (16.4 mmoles) of sodium nitrite in 6.5 ml of water is dropwise added and stirred at the same temperature for an additional 30 minutes.
  • the evaporation residue is purified by column chromatography (adsorbent: Merck Kieselgel 60; eluent: chloroform/methanol 1:1).
  • the obtained base weighing 1.7 g (49.7%), is transformed to the title hydrochloride by adding an ethereal solution of hydrogen chloride, m.p.: 173-175° C.
  • the excess of the reagent is decomposed with urea, then the solution is diluted with 35 ml of water and extracted twice with 35 ml of ether each.
  • the aqueous phase is alkalinized by adding 4N sodium hydroxide solution and extracted 3 times with 40 ml of ethyl acetate each.
  • the residue is transformed by adding a methanolic solution of hydrogen chloride to obtain the title compound in a yield of 2.56 g (60%), m.p.: 124-129° C. (from ethyl acetate).
  • the above starting substance can be prepared as follows:
  • the above starting substance can be prepared as follows:

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  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Urology & Nephrology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Cardiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyridine Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Plural Heterocyclic Compounds (AREA)
US08/737,168 1994-05-06 1995-05-04 Hydroximic acid derivatives, pharmaceutical compositions containing them, and processes for preparing the same Expired - Fee Related US5919796A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
HU9401488A HU219916B (hu) 1989-12-22 1994-05-06 Hidroximsav-származékok, eljárás előállításukra és az azokat tartalmazó gyógyszerkészítmények, valamint egyes intermedierjeik
HU9401488 1994-05-06
PCT/HU1995/000014 WO1995030649A1 (en) 1994-05-06 1995-05-04 Novel hydroximic acid derivatives, pharmaceutical compositions containing them and process for preparing same

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US5919796A true US5919796A (en) 1999-07-06

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US (1) US5919796A (pt)
EP (1) EP0758315B1 (pt)
JP (1) JP3877762B2 (pt)
KR (1) KR100372312B1 (pt)
CN (1) CN1079789C (pt)
AT (1) ATE170170T1 (pt)
BG (1) BG63336B1 (pt)
BR (1) BR9507619A (pt)
CZ (1) CZ288824B6 (pt)
DE (1) DE69504329T2 (pt)
DK (1) DK0758315T3 (pt)
EE (1) EE03296B1 (pt)
ES (1) ES2123252T3 (pt)
FI (1) FI964436A (pt)
MX (1) MX9605376A (pt)
NO (1) NO307752B1 (pt)
NZ (1) NZ285151A (pt)
PL (1) PL179032B1 (pt)
RO (1) RO115873B1 (pt)
SK (1) SK281387B6 (pt)
WO (1) WO1995030649A1 (pt)

Cited By (3)

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US6306878B1 (en) * 1995-09-29 2001-10-23 N-Gene Research Lab Inc Pharmaceutical compositions containing hydroximic acid derivatives
WO2003057664A1 (en) * 2002-01-11 2003-07-17 Biorex Kutató És Fejlesztö Rt. Carboxamidine derivatives and their use in the treatment of vascular diseases
US20080227813A1 (en) * 2006-09-26 2008-09-18 Jack Raymond Barber Pharmaceutical compositions and methods for treating diseases associated with neurodegeneration

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HU222994B1 (hu) * 1995-11-02 2004-01-28 BIOREX Kutató és Fejlesztő Rt. Hidroxilaminszármazékok és azok alkalmazása sejtek molekuláris chaperon-termelésének fokozására alkalmas gyógyszerkészítmények előállítására
UA64716C2 (en) * 1996-08-09 2004-03-15 Pharmaceuticals for therapy or prevention of illnesses connected with dysfunction of vascular endothelial cells
BR0302750A (pt) * 2003-08-08 2005-03-29 Catarinense S A Lab Uso de produto compreendendo material vegetal das espécies trichilia sp. associada ou não para a reversão/combate da fibrilação ventricular; composição farmacêutica compreendendo o referido material vegetal para a reversão/combate da fibrilação ventricular; método para a reversão/combate da fibrilação ventricular usando o referido material vegetal; uso do referido material vegetal para a produção de uma composição farmacêutica para a reversão/combate da fibrilação ventricular
HUP0303584A3 (en) 2003-10-30 2009-12-28 Cytrx Corp Use of a hydroximic acid halide derivative in the treatment of neurodegenerative diseases
WO2008070010A2 (en) * 2006-12-01 2008-06-12 Cytrx Corporation Hydroxylamine derivatives for the treatment of stroke
IL303026A (en) 2020-11-19 2023-07-01 Zevra Denmark As Processes for preparing arimoclomol citrate and its intermediates

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* Cited by examiner, † Cited by third party
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US6306878B1 (en) * 1995-09-29 2001-10-23 N-Gene Research Lab Inc Pharmaceutical compositions containing hydroximic acid derivatives
WO2003057664A1 (en) * 2002-01-11 2003-07-17 Biorex Kutató És Fejlesztö Rt. Carboxamidine derivatives and their use in the treatment of vascular diseases
US20080058323A1 (en) * 2002-01-11 2008-03-06 Csakai Zita J Pharmaceutically effective compounds
US20090075993A1 (en) * 2002-01-11 2009-03-19 Zita Jegesne Csakai Pharmaceutically effective compounds
US7550457B2 (en) 2002-01-11 2009-06-23 Cytrx Corporation Pharmaceutically effective compounds
US20090253690A1 (en) * 2002-01-11 2009-10-08 Cytrx Corporation Pharmaceutically effective compounds
US7691849B2 (en) 2002-01-11 2010-04-06 Cytrx Corporation Carboxamidine derivatives and their use in the treatment of vascular diseases
US20080227813A1 (en) * 2006-09-26 2008-09-18 Jack Raymond Barber Pharmaceutical compositions and methods for treating diseases associated with neurodegeneration

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FI964436A0 (fi) 1996-11-05
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JPH09512815A (ja) 1997-12-22
MX9605376A (es) 1998-05-31
EP0758315B1 (en) 1998-08-26
KR100372312B1 (ko) 2003-05-09
NO964677D0 (no) 1996-11-05
AU691284B2 (en) 1998-05-14
SK143096A3 (en) 1997-06-04
CZ325196A3 (en) 1997-06-11
SK281387B6 (sk) 2001-03-12
ATE170170T1 (de) 1998-09-15
ES2123252T3 (es) 1999-01-01
PL179032B1 (pl) 2000-07-31
CN1079789C (zh) 2002-02-27
EE03296B1 (et) 2000-10-16
DE69504329D1 (de) 1998-10-01
JP3877762B2 (ja) 2007-02-07
FI964436A (fi) 1996-11-27
NZ285151A (en) 1998-09-24
RO115873B1 (ro) 2000-07-28
BG100954A (en) 1997-08-29
EP0758315A1 (en) 1997-02-19
DE69504329T2 (de) 1999-04-08
DK0758315T3 (da) 1999-05-25
NO307752B1 (no) 2000-05-22
BG63336B1 (bg) 2001-10-31
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